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牵引供电系统雷电冲击模拟及其防护方法研究
Research on lightning impulse simulation method and protection technology of a traction power supply system
- 机车电传动 2022年第1期 页码：142-147
- 作者机构：
广州铁路职业技术学院，广东 广州 510430
- 作者简介：
谢雪芳（1977—），女，硕士，讲师，研究方向为供电过电压及其防护技术；E-mail：171780659@qq.com
- 基金信息：广东高校科研平台项目(2020ZDZX3115┫修订日期:)
DOI：10.13890/j.issn.1000-128X.2022.01.023
中图分类号： U224.2+5纸质出版日期：2022-01-10，
收稿日期：2021-09-01，
- 稿件说明：
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谢雪芳. 牵引供电系统雷电冲击模拟及其防护方法研究[J]. 机车电传动, 2022,(1):142-147.
XIE Xuefang. Research on lightning impulse simulation method and protection technology of a traction power supply system[J]. Electric drive for locomotives, 2022,(1):142-147.
谢雪芳. 牵引供电系统雷电冲击模拟及其防护方法研究[J]. 机车电传动, 2022,(1):142-147. DOI： 10.13890/j.issn.1000-128X.2022.01.023.
XIE Xuefang. Research on lightning impulse simulation method and protection technology of a traction power supply system[J]. Electric drive for locomotives, 2022,(1):142-147. DOI： 10.13890/j.issn.1000-128X.2022.01.023.
摘要
牵引供电系统在遭受雷击后会出现幅值较高的暂态过电压，影响铁路交通系统的稳定运行。为了有效评估牵引供电系统雷电冲击下的暂态特性，提出一种接触网杆塔的T型暂态模型和牵引供电系统的雷电传播模拟方法，对某110/27.5 kV牵引变电站建立其低压侧支路在反击雷冲击下的暂态仿真模型，并分析各主要电气设备的暂态特性。结果表明，随着反击雷距离的增大，牵引变压器低压侧雷电过电压峰值呈线性减小趋势；电流随距离增大而减小，但减小幅度变缓、呈饱和趋势。通过牵引变电站避雷器的不同配置方案，对比得出在牵引变压器低压输出侧安装避雷器为最优方案。
Abstract
The traction power supply system will have high amplitude transient overvoltage after lightning stroke
which will affect the stable operation of railway transportation system. In order to effectively evaluate the transient characteristics of traction power supply system under lightning impulse
a T-type transient model of catenary tower and a lightning propagation simulation method of traction power supply system was proposed. Based on a 110/27.5 kV traction substation
the transient simulation model of its low-voltage side branch under lightning impulse was established
and the transient characteristics of main electrical equipment were analyzed. The results show that the peak value of lightning overvoltage on the low voltage side of traction transformer decreases linearly with the increase of lightning counterattack distance; the current decreases with the increase of distance
but the decreasing range slows down and shows a saturation trend. Through the comparison of different configuration schemes of lightning arrester in traction substation
it was concluded that the installation of lightning arrester on the low-voltage output side of traction transformer is the best scheme.
关键词
牵引变电站雷电牵引变压器暂态特性防雷保护仿真
Keywords
traction substationlightningtraction transformertransient characteristicslightning protection schemesimulation
references
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